package com.llyb.lease.common.jwt;


import com.llyb.lease.common.constants.RedisConstant;
import com.llyb.lease.common.exception.LeaseException;
import com.llyb.lease.common.result.ResultCodeEnum;
import io.jsonwebtoken.*;
import io.jsonwebtoken.security.Keys;

import javax.crypto.SecretKey;
import java.util.Date;

public class JwtUtils {

    private static long tokenExpiration = 6 * 60 * 60 * 1000L;

    private static SecretKey tokenSignKey = Keys.hmacShaKeyFor("M0PKKI6pYGVWWfwfg90a0lTpGYX1d4QA".getBytes());

    public static String createToken(Long userId,String username){
        String token = Jwts.builder().setSubject("USER_INFO").setExpiration(new Date(System.currentTimeMillis() + tokenExpiration))
                .claim("userId", userId)
                .claim("username", username)
                .signWith(tokenSignKey)
                .compressWith(CompressionCodecs.GZIP)
                .compact();
        return token;
    }

    public static Claims parseToken(String token){
        try{
            Jws<Claims> claimsJws = Jwts.parserBuilder().setSigningKey(tokenSignKey).build().parseClaimsJws(token);
            return claimsJws.getBody();
        }catch (ExpiredJwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_EXPIRED);
        }catch (JwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_INVALID);
        }

    }
}
